BlueBlade Lawn Mower Blades are designed to provide you with a superior cut that shreds, bags, and discharges your grass clippings. BlueBlade Lawn Mower Blade are the best mulching blade you can mount on your mower. BlueBlade Lawn Mower Blades are heat treated with ComponentsPlus™ 3TPlus Technology providing you with one of the strongest and hardest blades on the market.